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Nuclear power station reactor protection system testing method and apparatus thereof

A technology for reactor protection and system testing, applied in the field of instrumentation and control of nuclear power plants, can solve problems such as nuclear power plant safety hazards and AV42 malfunctions

Active Publication Date: 2015-04-01
DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a test method for the reactor protection system of a nuclear power plant, which aims to solve the problem that the existing test method is likely to cause AV42 malfunction, thereby causing serious safety hazards in the nuclear power plant

Method used

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  • Nuclear power station reactor protection system testing method and apparatus thereof
  • Nuclear power station reactor protection system testing method and apparatus thereof
  • Nuclear power station reactor protection system testing method and apparatus thereof

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Embodiment 1

[0027] figure 1 A flow chart of a test method for a nuclear power plant reactor protection system provided by the first embodiment of the present invention is shown, and the details are as follows:

[0028] Step S11, triggering the CPU is testing signal.

[0029] Specifically, an operation of triggering a central processing unit (Central Processing Unit, CPU) test signal may be executed by an execution logic unit (Actuator Logic Unit, ALU). In the TXS system (the power station control system with the highest processing security level of 1E), there are 7 priority levels for the CPU task processor, and running the T3 test script through the service terminal (Service Unit, SU) belongs to the service task of the CPU, and the priority level is the reciprocal Second, it is not a task that must be completed every processing cycle. For example, in each processing cycle, the service task is executed only when the CPU finishes processing the first 5 tasks. If the time after the first ...

Embodiment 2

[0050] image 3 A structural diagram of a test device for a nuclear power plant reactor protection system provided by the second embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown. In this embodiment, "first", "second" and "third" in "first pulse output module", "second pulse output module" and "third pulse output module" are only used to distinguish different "Pulse output module" has no other meaning. By analogy, the "first" and "second" in "first AND gate" and "second AND gate" are only used to distinguish different "AND gates" and have no other meaning.

[0051] The nuclear power plant reactor protection system test device includes: a CPU test module 31 , a binary test trigger module 32 , a blocking signal determination module 33 , an action signal determination module 34 , and a signal response module 35 . in:

[0052] The CPU testing module 31 is configured to tr...

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Abstract

The invention is applicable to the field of nuclear power station instrument control, and provides a nuclear power station reactor protection system testing method and an apparatus thereof. The method comprises the following steps: triggering a CPU onsite testing signal; triggering a binary testing signal; determine a blocking signal according to the CPU onsite testing signal and the binary testing signal, wherein the CPU onsite testing signal is not always being 0 in the presence of the binary testing signal; determining an action signal according to the binary testing signal; and executing a corresponding operation according to the locking signal and the action signal. The method and the apparatus can reduce the probability of occurrence of misoperation of AV42.

Description

technical field [0001] The invention belongs to the field of instrumentation and control of nuclear power plants, and in particular relates to a test method and device for a reactor protection system of a nuclear power plant. Background technique [0002] The main test contents of the nuclear power plant reactor protection system T3 test include: reactor protection system (RPS) and TXP interface, RPS and AV42 connectivity, RPS and ATWT connectivity, RPS tripping reactor circuit breaker, rod drop test, etc., in the normal operation of the unit During the period, a single column is performed every two months to evaluate the reliability of the reactor protection function. Among them, AV42 is a drive module with safety level and priority function (selective output according to the priority of the module receiving instructions). [0003] At present, when testing according to the existing test script, it is found that an AV42 false start event occurred during the T3 test of the n...

Claims

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Application Information

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IPC IPC(8): G21C17/00
CPCG21C17/00G21C17/10G21C17/102Y02E30/30
Inventor 刘坤亮王宝刚况德军何银江
Owner DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT
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